An sbt plugin for Android development in Scala
Pull request Compare This branch is 430 commits behind jberkel:master.
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Failed to load latest commit information.



Requires sbt and the Android SDK (brew install sbt android-sdk when using homebrew on OSX).

To use the plugin in a project, you just need to create project/plugins/Plugins.scala:

import sbt._
class Plugins(info: ProjectInfo) extends PluginDefinition(info) {
  val android = "org.scala-tools.sbt" % "sbt-android-plugin" % "0.4.2"

and make the project definition in project/build/Project (for example):

import sbt._

class Project(info: ProjectInfo) extends AndroidProject(info) with MarketPublish {
  override def androidPlatformName = "android-2.1"

  // or preferably set the ANDROID_SDK_HOME environment variable
  override def androidSdkPath = Path.fromFile(new File("/usr/local/Cellar/android-sdk/r5"))

  // set to the keystore alias you used when creating your keychain
  val keyalias = "my_keys"

  // set to the location of your keystore
  override def keystorePath = Path.userHome / ".keystore" / "mykeys.keystore"

Alternatively, you can also use a provided script to set everything up for you:

$ script/create_project myAndroidProject

This will generate the project structure as well as all needed files plus skeleton tests, specs and activities.

To build the package:

$ cd myAndroidProject
$ sbt update package-debug

To install the package:

$ sbt install-emulator

To install and automatically start the main activity

$ sbt start-emulator

To build a signed package for release into the Marketplace

$ sbt sign-release

Scala Versions

The version of Scala that sbt compiles your project against is configured in the buildScalaVersion property in the project/ file. While this currently defaults to 2.7.7, you may set it to other versions including Scala 2.8 versions.

Whenever you change build versions, you'll need to run update again to fetch dependencies. For more information, see the sbt documentation on cross-building.

Hacking on the plugin

If you need make modifications to the plugin itself, you can compile and install it locally (you need at least sbt 0.7.x to build it):

$ git clone git://
$ cd android-plugin
$ sbt publish-local    

Because the plugin gets cached in a project based on its version number you might need to use sbt clean-plugins to force a reload after sbt publish-local.


This code is based on work by Walter Chang (saisiyat), turned into a plugin by Mark Harrah.